Reverse DNS (PTR)
The PTR record does the reverse DNS lookup: starting from an IP address, it finds the domain name. It's like looking up "who owns this phone…
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How it works
How TheSiteFuse checks "Reverse DNS (PTR)"
The PTR record does the reverse DNS lookup: starting from an IP address, it finds the domain name. It's like looking up "who owns this phone number". It's especially important for mail servers.
Why it matters
Real-world impact of "Reverse DNS (PTR)"
Without a PTR record, emails sent from this server are more likely to be marked as spam, because email servers verify that the IP corresponds to a known domain.
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